一日三秋 [－－－－]

Jyutping jat1 jat6 saam1 cau1
Pinyin yī rì sān qiū

Definitions (CC-CEDICT)
  1. a single day apart seems like three seasons (idiom)
Definitions (Wiktionary)
  1. phrase, idiomatic
    A single day apart seems like three years.